Connect iPhone to Mac with USB cable and run the software. iPhone will be detected by Leawo iTransfer for Mac automatically and LIBRARY and PLAYLIST of the device will show in the left sidebar. Click PLAYLIST and choose one of the playlists to manage.
Click dark-blue “+” 


To operate the playlist more deeply, you can right-click any playlist and there will pop up a small menu with several options: Add File/Add Folder, Export Playlist, and Rename/Delete Playlist. Click Add File 




Apart from exporting the whole playlist, you can back up songs in playlist furthermore. Select the songs in the playlist and right click these songs. Then choose “Transfer to > My computer” and there will pop up a dialog.
Check “Save to Folder”, then click Change 
